165338655 has 32 divisors (see below), whose sum is σ = 279459840. Its totient is φ = 83341440.

The previous prime is 165338653. The next prime is 165338683. The reversal of 165338655 is 556833561.

It is a happy number.

It is not a de Polignac number, because 165338655 - 2¹ = 165338653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165338653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15861 + ... + 24129.

It is an arithmetic number, because the mean of its divisors is an integer number (8733120).

Almost surely, 2^165338655 is an apocalyptic number.

165338655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165338655 is a deficient number, since it is larger than the sum of its proper divisors (114121185).

165338655 is a wasteful number, since it uses less digits than its factorization.

165338655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351.

The product of its digits is 324000, while the sum is 42.

The square root of 165338655 is about 12858.4079496647. The cubic root of 165338655 is about 548.8556426832.

The spelling of 165338655 in words is "one hundred sixty-five million, three hundred thirty-eight thousand, six hundred fifty-five".